setpriority.cpp

来自「一个很棒的网络控制系统仿真软件」· C++ 代码 · 共 48 行

#ifndef SET_PRIORITY
#define SET_PRIORITY

#include "gettask.cpp"
#include "findQ.cpp"
#include "moveready.cpp"

// Setting priority of specific task
void ttSetPriority(double prio, char *nameOfTask) {
  
  TaskNode *tn;
  Task* task = getTask(nameOfTask);
 
  if (task == NULL) {
    char buf[200];
    sprintf(buf, "ttSetPriority: Non-existent task '%s'\n",nameOfTask);
    MEX_ERROR(buf);
    return;
  }

  if (task->priority - task->assignedPriority < 0.0) {
    // Priority inheritance, do not change the priority now
  } else {
    task->priority = prio;
  }
  task->assignedPriority = prio;
  
  // Reshuffle readyQ?
  tn = findInQ(nameOfTask, rtsys->readyQ);
  if (tn != NULL) {
    rtsys->readyQ->deleteNode(tn);
    moveToReadyQ(task);
  }
}

// Setting priority of calling task
void ttSetPriority(double prio) {
  
  if(rtsys->executing == NULL) {
    MEX_ERROR("ttSetPriority: No running task");
    return;
  }

  ttSetPriority(prio, rtsys->executing->name);
}

#endif